The study of the HTGR thermal insulation

The problem of the thermal insulation for the high-temperature gas-cooled reactors is among the most important problems to be solved in creation and operation of these reactors, which is connected first of all with specific conditions of its operation.

The level of the coolant temperature in HTGR can be up to 1O00°C and higher Such high temperatures ap-

proach and occasionally exceed the boundary of normal operation of various materials. Therefore, thermal stressed surfaces of reinforced concrete vessels, steel pipelines and reactor accessory equipment need to be isolated in order to provide the constructions working capacity and to reduce thermal losses. With a reliable thermal insulation the decrease in thermal losses increases the whole installation efficiency and makes it possible to supply the objects-consumers with high-temperature heat.